The upper arm is longer than the forearm. When the hand is brought up to the shoulder, it is noticeable that the upper arm is slightly less than the length of the forearm and hand, to the first row of knuckles. The tip of the elbow moves forward as the forearm is brought up. This is because the tip of the elbow is actually the end of the forearm bone, rather than the tip of the upper arm bone. The inside knob of the elbow, which is not visible from this view, is the tip of the upper bone. It changes position only when the upper arm is moved. When relaxed in a downward position, the arm is slightly bent at the elbow.